diff --git a/Cargo.lock b/Cargo.lock
index 9abd2ed..69d954a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -227,7 +227,7 @@ dependencies = [
 [[package]]
 name = "erg_common"
 version = "0.6.0-beta.4"
-source = "git+https://github.com/erg-lang/erg?branch=main#bce00747af9b69191ba4e63f3db44afd51509b8b"
+source = "git+https://github.com/erg-lang/erg?branch=main#37a203e25421c8a9e8d231cc2486e7df9b2ce177"
 dependencies = [
  "hermit-abi",
  "libc",
@@ -237,7 +237,7 @@ dependencies = [
 [[package]]
 name = "erg_compiler"
 version = "0.6.0-beta.4"
-source = "git+https://github.com/erg-lang/erg?branch=main#bce00747af9b69191ba4e63f3db44afd51509b8b"
+source = "git+https://github.com/erg-lang/erg?branch=main#37a203e25421c8a9e8d231cc2486e7df9b2ce177"
 dependencies = [
  "erg_common",
  "erg_parser",
@@ -246,7 +246,7 @@ dependencies = [
 [[package]]
 name = "erg_parser"
 version = "0.6.0-beta.4"
-source = "git+https://github.com/erg-lang/erg?branch=main#bce00747af9b69191ba4e63f3db44afd51509b8b"
+source = "git+https://github.com/erg-lang/erg?branch=main#37a203e25421c8a9e8d231cc2486e7df9b2ce177"
 dependencies = [
  "erg_common",
  "unicode-xid 0.2.4",
diff --git a/crates/py2erg/convert.rs b/crates/py2erg/convert.rs
index f34965d..9738629 100644
--- a/crates/py2erg/convert.rs
+++ b/crates/py2erg/convert.rs
@@ -54,6 +54,26 @@ fn escape_name(name: String) -> String {
         "tuple" => "GenericTuple".into(),
         "type" => "Type".into(),
         "ModuleType" => "GeneticModule".into(),
+        "Obj" => "Obj\0".into(),
+        "Int" => "Int\0".into(),
+        "Nat" => "Nat\0".into(),
+        "Ratio" => "Ratio\0".into(),
+        "Float" => "Float\0".into(),
+        "Bool" => "Bool\0".into(),
+        "Str" => "Str\0".into(),
+        "NoneType" => "NoneType\0".into(),
+        "Code" => "Code\0".into(),
+        "Frame" => "Frame\0".into(),
+        "Error" => "Error\0".into(),
+        "Inf" => "Inf\0".into(),
+        "NegInf" => "NegInf\0".into(),
+        "Type" => "Type\0".into(),
+        "ClassType" => "ClassType\0".into(),
+        "TraitType" => "TraitType\0".into(),
+        "Patch" => "Patch\0".into(),
+        "NotImplemented" => "NotImplemented\0".into(),
+        "Ellipsis" => "Ellipsis\0".into(),
+        "Never" => "Never\0".into(),
         _ => name,
     }
 }
@@ -201,7 +221,8 @@ impl ASTConverter {
     fn param_pattern_to_var(pat: ParamPattern) -> VarPattern {
         match pat {
             ParamPattern::VarName(name) => VarPattern::Ident(Identifier::new(Some(DOT), name)),
-            _ => todo!(),
+            ParamPattern::Discard(token) => VarPattern::Discard(token),
+            other => todo!("{other}"),
         }
     }